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    • 10. 发明授权
    • Lipopolysaccharide binding protein and process for producing the same
    • 脂多糖结合蛋白及其制备方法
    • US5760177A
    • 1998-06-02
    • US393058
    • 1995-02-23
    • Sadaaki IwanagaShunichiro KawabataTetsu Saito
    • Sadaaki IwanagaShunichiro KawabataTetsu Saito
    • A61K9/08A61K38/00C07K1/22C07K14/00C07K14/435G01N33/579G01N33/92A61K39/385
    • C07K14/43509A61K38/00Y10S530/82
    • The invention provides a lipopolysaccharide (LPS) binding protein isolated from horseshoe crab. The LPS binding protein is isolated by (i) extracting the hemocyte membrane fraction of horseshoe crab with a polyethylene glycol ether type nonionic surface active agent in the presence of Ca ions, (ii) combining the extract with immobilized LPS under conditions that permit the LPS binding protein to bind the immobilized LPS to produce an LPS-LPS binding protein complex, and (iii) harvesting the LPS binding protein released from the complex in the presence of a chelating agent. The isolated LPS binding protein has a molecular weight of about 27,000 daltons as determined by SDS polyacrylamide gel electrophoresis and is operative to bind a lipopolysaccharide endotoxin. Accordingly, the isolated LPS binding protein can be used for detecting endotoxin and/or removing endotoxin from an injectable medicine.
    • 本发明提供从马蹄蟹分离的脂多糖(LPS)结合蛋白。 通过(i)在Ca离子存在下用聚乙二醇醚型非离子表面活性剂提取鲎的血细胞膜级分,分离LPS结合蛋白,(ii)在允许LPS的条件下将提取物与固定的LPS组合 结合蛋白质以结合固定的LPS以产生LPS-LPS结合蛋白复合物,和(iii)在螯合剂存在下从复合物中收获释放的LPS结合蛋白。 通过SDS聚丙烯酰胺凝胶电泳测定,分离的LPS结合蛋白具有约27,000道尔顿的分子量,并且可操作地结合脂多糖内毒素。 因此,分离的LPS结合蛋白可用于从可注射药物中检测内毒素和/或除去内毒素。